It's about one-and-one-tenth times the number of Submarines in the US Navy.
In other words, the count of Submarines in the US Navy is 0.910 times 79.(a.k.a. Subs) (includes all types, all classes) (2015 figures)
It's about nine-tenths the number of Keys on a Piano.
In other words, the count of Keys on a Piano is 1.10 times 79.(Moden layout; A0 to C7)
It's about three-fourths the number of Wolves in Yellowstone National Park.
In other words, the count of Wolves in Yellowstone National Park is 1.320 times 79.(a.k.a. Henihco'oo; a.k.a. Héetíhco'oo) (December 2014 figures; Wyoming Park area)
As of the 2014 population count, there were 104 wolves living in Yellowstone National Park, in twelve packs. All of the wolves now living in the Park are thought to have descended from the 66 wolves (re)introduced into the Park in 1995-96.
It's about two-thirds the number of Elements on the Periodic Table.
In other words, 79 is 0.6690 times the count of Elements on the Periodic Table, and the count of Elements on the Periodic Table is 1.490 times that amount.(a.k.a. Periodic Table of the Elements, a.k.a chemical elements) (confirmed elements as of 2016)
It's about one-and-a-half times the number of Countries in Africa.
In other words, the count of Countries in Africa is 0.670 times 79.(2016 figures) (sovereign states recognized by the UN only)
It's about one-and-three-fifths times the number of Teeth in a Great White Shark's Mouth.
In other words, the count of Teeth in a Great White Shark's Mouth is 0.630 times 79.(Carcharodon carcharias) (average; including developing rows)
It's about three-fifths the number of Union Stations in the United States.
In other words, 79 is 0.5850 times the count of Union Stations in the United States, and the count of Union Stations in the United States is 1.710 times that amount.(a.k.a. Union Terminal; a.k.a. Joint Station; a.k.a. Union Depot) (2016 figures)
Typically shared between multiple railroad companies and stations, there are about 135 "Union Stations" in the United States. Of these, the busiest station is Chicago Union Station, which handles 120,000 passengers each year.